Question

我试图在嵌套内执行某些代码之前检查某些条件是否为真-如果只测试了第一个条件，其余的则被忽略了……请问我怎么了？。

           int main()
    {    

        cout << "Enter your Image directory " << endl;
        string imagedir;
        getline(cin, imagedir);
        cout << endl;
        Mat img = imread(imagedir); 
        if (img.empty())
        {
            cout << "Error!!!, Invalid image or wrong Directory, check your input and try again, see you later" << endl;
            system("pause");
            return -1;
        }
        auto imgh = img.cols;
        auto imgw = img.rows;

        cout << "The height and width of your image is " << " " << imgh << "x" << imgw << endl;
        cout << endl;

        cout << "Options And Type Of Operation" << endl;
        Mat des;
        auto Ksize1 = 3;
        auto Ksize2 = 3;
        do {

            cout << "Enter E for the Entire Image or P for Part of the image" << endl;
            char Option;
            cin >> Option;
            if (Option == 'P' || Option == 'p')
            {
                int x = 0;
                int y = 0;
                int imgheight;
                int imgwidth;
                cout << "Enter your ROI, The Location(point, x and y axis) You want to work on " << endl;
                cout << endl;
                cin >> x;
                cin >> y;
                cout << endl;
                //if (x >= img.cols && x <= img.cols && y >= img.rows && y <=img.rows) Am having the first problem at this position..
{
                if (x == 2 && y == 10) {
                    cout << "Enter the Height and Width of your ROI " << endl;
                    cout << endl;
                    cin >> imgheight;
                    cin >> imgwidth;
                    imgh = imgh - x;
                    imgw = imgw - y;
                }
                /*  if (imgheight >= imgh && imgheight <= imgh && imgwidth >= imgw && imgwidth <= imgw)
                              {
                                  cout << " Enter From 0 to 9 The Intercity Of The Blur You Want  " << endl;
                                  cout << endl;
                                  int Ksize1, Ksize2;
                                  cin >> Ksize1;
                                  cin>> Ksize2;

                                  if (Ksize1 >= 1 && Ksize1 <= 9 && Ksize2 >= 1 && Ksize2 <= 9)
                                  {
                                  Rect rect(x, y, imgh, imgw);
                                  GaussianBlur(img, des, Size(Ksize1, Ksize2), 0);
                                  string ImageO = "Original Image";
                                  string ImageB = "GaussianBlured";
                                  namedWindow(ImageO);
                                  namedWindow(ImageB);
                                  imshow(ImageO, img);
                                  waitKey(0);
                                  imshow(ImageB, des), waitKey(0);
                              }

                            }


                        }

                    }*/
                    //else if()
            }
                } while (false);


        //cin.get();
        system("pause");
        return 0;
    }

是的，我希望所有条件在继续之前都为真，即使所有条件都为真，下一个if语句也会被忽略，我想检查输入的位置是否在图像的高度和宽度之间。

Answer 1

&&意味着要执行代码，所有条件都必须为真。如果第一个条件为假，则将不执行代码。

我的if语句有问题，逻辑未加在一起

1 个答案: